Precision square steel for solid constructions
The basis for heavy-duty frames and durable machine elements.
Our precision square steel is the ideal semi-finished product for heavy-duty, dimensionally accurate frames and demanding construction elements. Manufactured with maximum dimensional accuracy, flatness parallelism, it offers the stability and precision required by modern mechanical engineering applications.
Whether as standard goods available immediately or produced exactly to your required dimensions, you will receive square steel that you can rely on for its quality and reliability in the long term.
PRÄZI square steel
| Features | Scale-free surface, annealed condition |
| Execution | with machining allowance, inspecial dimensions("cut-to-size") |
| Tolerances | Dimensional accuracy (LxWxD), flatness, angularity, parallelism according to DIN 59350, all details in ourTechnical Delivery Conditions |
| Applications | Forming tools, punching tools, machine parts, standard parts, construction elements |
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material selection
We deliver over 10,000 dimensions in around 20 material grades directly from stock.
High-alloy steel
Cold work steel 1.2379 | AISI D2
PRÄZI Flachstahl® 1.2379 impresses with its toughness, wear resistance, low distortion and nitridability. Perfect for cutting and punching tools, shearing knives, trimming dies, cutting rollers and breakage-sensitive parts.
Air-hardening cold work tool steel 1.2363 | AISI A2
PRÄZI Flachstahl® 1.2363 offers high wear resistance, toughness, dimensional stability during heat treatment and good compressive strength. Ideal for cutting and punching tools, rollers, shear blades, thread rolling dies, embossing tools, calibration mandrels, measuring tools and plastic molds.
Cold work steel 1.2083 | AISI 420
PRÄZI Flachstahl® 1.2083 is a corrosion-resistant, easily machinable cold-work tool steel that is easy to harden and polish. Ideal for molds, pressing tools and applications in the plastics industry.
Cold work steel 1.2436 | AISI D6
PRÄZI Flachstahl® 1.2436 offers maximum hardness and wear resistance. Ideal for cutting and embossing tools, broaches, punches, pressing and bending tools, folding rails and knives.
Hot-work tool steel 1.2343 | AISI H 11
PRÄZI Flachstahl® 1.2343 has high toughness, hot wear resistance, excellent thermal conductivity and good air hardenability. They can be nitrided, polished and eroded. Ideal for die casting knives, extrusion knives, hot shear knives, cold shear knives, forging tools and other hot work tools.
Hot-work tool steel 1.2343 ESU | AISI H11 ESR
PRÄZI Flachstahl® 1.2343 ESU offers high toughness, hot wear resistance, excellent thermal conductivity and good air hardenability. They can be nitrided, polished and eroded. Ideal for die casting knives, extrusion knives, hot shear knives, cold shear knives, forging tools and other hot work tools.
Hardened and tempered steel 1.2085 | AISI 420 FM
PRÄZI Flachstahl® 1.2085 is a corrosion-resistant tool steel with improved machinability compared to 1.2316. Ideal for mold frames and tools for processing corrosive plastics.
Tool steel 1.3343 | AISI M2
PRÄZI Flachstahl® 1.3343 is a highly wear-resistant tool steel with high toughness, compressive strength and heat resistance. Ideal for cutting tools, milling cutters, drills, circular saw segments, metal saws, woodworking tools, dies, punches and plastic molds with high wear resistance.
Stainless steel 1.4112 | AISI 440B
PRÄZI Flachstahl® 1.4112 is a hardenable, easily machinable, polishable and corrosion-resistant stainless steel. Ideal for plastics processing, tools in the food industry, knives, cutlery, ball bearings and spray nozzles.
Low-alloy steel
Cold work steel 1.2767 | AISI 6F 7
PRÄZI Flachstahl® 1.2767 is a tough, hardenable tool steel with a high nickel content. It offers excellent polishability, photoetchability and erodibility. Ideal for mold inserts, plastic and injection molds, bending tools, pressure bars and shear blades.
Cold work steel 1.2842 | AISI 02
PRÄZI Flachstahl® 1.2842 impresses with its outstanding dimensional stability, high edge retention and excellent wear resistance.
This cold work tool steel is ideal for jigs and fixtures, gauges, templates, rulers, punching tools, measuring tools, precision parts and guide rails.
Heat treatable steel 1.7225 | AISI 4140
PRÄZI Flachstahl® 1.7225 offers high strength and toughness in the quenched and tempered condition and can be induction hardened. Ideal for mechanical engineering, machine parts, axles, connecting rods, crankshafts, gear shafts, gear wheels and base plates.
Tempered plastic mold steel 1.2311 | AISI P 20
PRÄZI Flachstahl® 1.2311 can be easily polished, nitrided, chromium-plated and grained. Ideal for the production of plastic molds and mold frames for plastic and die casting molds.
Tempered plastic mold steel 1.2312 | AISI P 20+S
PRÄZI Flachstahl® 1.2312 offers excellent machinability and nitriding properties. Ideal for plastic molds and mold frames for plastic and die casting molds. Not suitable for etching, polishing, hard chrome plating or graining.
case hardening steel 1.7131 | AISI 5115
PRÄZI Flachstahl® 1.1731is a tough case hardening steel with good machinability in the soft annealed condition and excellent case hardenability. It is ideal for parts subject to wear such as gears, shafts, bolts, bushes, guides and fittings.
case hardening steel 1.2162 | AISI 5120
PRÄZI Flachstahl® 1.2162 is easy to machine, easy to polish and can be nitrided after heat treatment. It offers high toughness in the core and surface hardness. Ideal for tools in plastics processing, pinions, gear wheels, gear racks, machine parts and guides.
Material TOOLOX® 33
PRÄZI flat steel tolerances according to DIN 59350, tempered to 950-1125 N/mm2
Material TOOLOX® 44
PRÄZI flat steel tolerances according to DIN 59350, hardened to 45 HRC, ground on all sides without decarburization with Ra max. 4 µm.
Unalloyed steel
Unalloyed tool steel 1.1730 | AISI SAE 1045
PRÄZI Flachstahl® 1.1730 is an easily machinable shell hardener with a hard surface and tough core. Ideal for build-up plates and strips for plastic molds, blow and foam molds, hand tools and agricultural tools.
Unalloyed structural steel 1.0570 / 1.0577 | AISI A 106
PRÄZI Flachstahl® 1.0570 / 1.0577 is a construction material with very good weldability. Ideal for mechanical engineering, intermediate layers and base plates in stamping and mold making.
Perfect surfaces
& tightest tolerances
Precise tolerances for direct processing
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Efficient further processing
Maximum planning reliability
No milling or grinding required
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Faster turnaround times
Limitless possibilities
Custom dimensions
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Around 20 material grades
Technological possibilities & consulting
Choosing the right raw material influences every stage of your process chain. Precise, low-tension flat steel from Präzi reduces machining costs, protects your tools, and increases repeat accuracy in series production. This allows you to sustainably increase the quality, stability, and service life of your end products. As an experienced partner, we support you with technological expertise and sound advice—for greater efficiency and reliability in your value creation.
Your guide to standard dimensions
Your consultation for individual needs
Your consultation for individual needs
FAQ
Here you will find answers to frequently asked questions. For detailed technical data or
price information, please visit our online shop directly.
What does DIN 59350 regulate for precision square steel?
The DIN 59350 standard regulates the tolerances for finely machined, sharp-edged, square precision square steel. It ensures that the steel complies with the narrowest permissible deviations for nominal dimensions, angularity, and parallelism.
What are the maximum dimensions possible for precision square steel?
The technical delivery conditions of the PRÄZI GROUP to square dimensions 4 mm to 150 mm in length.
What advantage does precision square steel offer over raw steel for construction purposes?
Precision square steel has sharp edges and is finely machined, ensuring a decarburization-free surface and high precision. This is crucial for heavy-duty frames that require stability, dimensional accuracy, and reliability.
Can I machining allowance square steel with machining allowance ?
Yes, the PRÄZI GROUP machining tolerance square steel machining tolerance with both DIN 59350 and machining tolerance
How long are typical series lengths?
Precision square steel is available in standard lengths of 500 mm and 1000 mm.
How quickly will my order be shipped?
Orders for items in stock that are received by a certain time (e.g., 1:00 p.m.) are often shipped on the same day.